I've tried some searching, but so far unsuccessfully.

I'm considering building a new intake, but to get the Helmholtz tuning right, I need more information than I have. Particularly hard to get (without taking the intake side apart) are:

Port length
Average port diameter (and yes, I know the port volume is 125cc)
Runner diameter (ID)
Plenum volume

I can get the TB length and diameter, as well as the runner length with a tape measure (though if anybody happens to have that info, it would be helpful too!)

 

Umm, sorry- that's 151cc, not 125. The questions remain.